/*
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 * and open the template in the editor.
 */

package p3;

import p3.logicaNegocio.Producto;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import javax.websocket.Session;

/**
 *
 * @author pargon
 */
@WebServlet(name = "addCesta", urlPatterns = {"/addCesta"})
public class addCesta extends HttpServlet {

    /**
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code>
     * methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        HttpSession mySesion = request.getSession(true);
        int i = Integer.parseInt(request.getParameter("id"));
        ArrayList<Producto> carrito = (ArrayList<Producto>) mySesion.getAttribute("carrito");
        if(carrito== null) carrito= new ArrayList<>();
        boolean enCarro = false;
        for(Producto p : carrito) {
            if(p.getIdProducto() == i){ enCarro = true;
            if(p.getStock() - p.getCantidad() != 0) p.setCantidad(p.getCantidad() + 1); //Posible punto de petado
           }
        }
        if(!enCarro) {
            accesoBD bd = new accesoBD();
            Producto p = bd.getBirra(i);
            p.setCantidad(1);
            if(p.getStock()-1 >= 0) carrito.add(p);
        }
        
        mySesion.setAttribute("carrito", carrito);
         response.sendRedirect("tienda.jsp");
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

}
